Ndunguru, Philibert C. Econometrics : a science for non-experimental data analysis / Philibert C. Ndunguru - Morogoro : Research Information and Publication Department, c2007. - xi, 239 p. : Ill.; 20 cm. Includes bibliographical references (P. 233 - 235) and index eng ISBN: 9987617573 TZS 10,000/= Subjects--Topical Terms: Economics, MathematicalEconometrics Dewey Class. No.: 330.015195 NDU